Suggest Treatment For Severe Pain In The Left Shoulder

I have severe pain in the left shoulder when abducting or externally rotating or pulling or lifting items. Can not pull shirt over my head We think rotator cuff but my right shoulder is the same but just not as bad as the left shoulder. I did have it in the hips, not sure if its joint pain or muscle. I have discomfort in both arms, worse at night and when I first wake up. Kind of feels similar to After an extremity falls asleep and is just stopping from being numb and tingly. My muscles over fatigue more easily and arms and legs just kind of sore. A massage feels good but they are kind of sore to massage as if I did a tough workout. I am 52 and unfortunately have not worked out/exercised in a very very long time. I started out with tight painful achilles tendons in the morning, then I started having heart palpatations primarily at night, and can feel it sometimes in my throat, then severe left shoulder pain if I try to lift or pull something, or reach out to grab something, my right shoulder has pain when using it but I am still able to use it